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Annals of Surgical Treatment and Research ; : 59-66, 2021.
Article in English | WPRIM | ID: wpr-874209


Purpose@#Treatment with 4 cycles of docetaxel and cyclophosphamide (TC) in the adjuvant setting is associated with better outcomes than treatment with doxorubicin and cyclophosphamide (AC). However, Western guidelines have indicated that TC confers a high risk (>20%) of febrile neutropenia (FN), while AC confers an intermediate risk (10%–20%) of FN. Threrefore, we evaluated the incidence of FN and the clinical utilization of pegfilgrastim prophylaxis after adjuvant TC chemotherapy. @*Methods@#We categorized 201 patients who received adjuvant TC chemotherapy into 3 groups according to the method of prophylaxis and compared neutropenic events, other adverse events, and hospital care costs in the 3 groups. @*Results@#The incidence of grade 4 neutropenia decreased from 93.0% in patients without prophylaxis to 82.4% in those who received secondary prophylaxis and 16.7% in those who received primary prophylaxis. Although the incidence of FN was not different between patients without prophylaxis and patients who received secondary prophylaxis (15.7% and 14.9%), none of the patients who received primary prophylaxis developed FN. Moreover, a decrease in neutropenic events resulted in a significant decrease in the mean duration of neutropenia (2.50 days to 0.08 days, P < 0.001), the risk of hospitalization (29.8% to 2.2%, P < 0.001), and the mean total hospital care cost for all chemotherapy cycles (790.80 to 486.00 US dollars, P < 0.001). @*Conclusion@#The use of pegfilgrastim prophylaxis during adjuvant TC chemotherapy is associated with significant decreases in the incidence of neutropenic events, hospitalization, and hospital care cost compared to those seen in patients without prophylaxis.